After a chemical attack on a subway, Liz and the FBI search for the man responsible. Liz reluctantly calls on Red for his help after she finds her search for the next person on the blacklist, brilliant scientist Frederick Barnes, heading to a dead end. Meanwhile, Liz wants nothing to do with Red after he implicated Tom.

Donald attempts to protect Red from a possible assassination attempt but is misled. The newest member on the blacklist, Anslo Garrick, infiltrates the FBI black site and tries to capture Red. Meanwhile Liz gets caught in an elevator and tries to figure out what is going on.